CN101793418B - Oil fume pump exhaust purifier - Google Patents

Oil fume pump exhaust purifier Download PDF

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Publication number
CN101793418B
CN101793418B CN2010101025722A CN201010102572A CN101793418B CN 101793418 B CN101793418 B CN 101793418B CN 2010101025722 A CN2010101025722 A CN 2010101025722A CN 201010102572 A CN201010102572 A CN 201010102572A CN 101793418 B CN101793418 B CN 101793418B
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China
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plenum chamber
exhaust
oil
gas
passage
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CN101793418A (en
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章志军
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Longyou Environmental Protection Technology Co., Ltd. Jitong
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章志军
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24CDOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00Details
    • F24C15/20Removing cooking fumes
    • F24C15/2035Arrangement or mounting of filters
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24CDOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00Details
    • F24C15/20Removing cooking fumes
    • F24C15/2042Devices for removing cooking fumes structurally associated with a cooking range

Abstract

The invention relates to an oil fume pump exhaust purifier. Most of the existing fume exhaust ventilators generate oil-containing waste water and waste gas, and need high operation cost and high electricity consumption, and the pump exhaust purification effect also needs to be improved. The oil fume pump exhaust purifier of the invention comprises a gas collection cover, a first gas collection tank and a second gas collection tank, wherein the gas collection cover is provided with a gas inlet opening and a gas conducting passage, the first gas collection tank is arranged at the downstream of the gas conducting passage in the flue gas flowing direction, exhaust holes and exhaust fans are arranged on the tank walls of the first gas collection tank except the bottom wall and one side tank wall, the second gas collection tank is arranged at the downstream of the first gas collection tank in the flue gas flowing direction, and is communicated with the exhaust holes through exhaust pipelines, a temperature reduction mechanism is arranged on at least one section of the pipeline of the exhaust pipelines, and a centrifugal fan is arranged at a gas exhaust opening. Through the structure, the flue gas pump exhaust effect and the oil smoke separation effect from the flue gas can be improved, and in addition, the electricity consumption is low. The device of the invention is mainly used in occasions of household kitchens, catering industry operation rooms and the like.

Description

Oil fume pump exhaust purifier
Technical field
The present invention relates to household kitchen, the oil fume pump exhaust in catering trade operation room or food processing place purifies, and specifically, the present invention relates to be particularly useful for the oil fume pump exhaust purifier of catering trade or family.
Background technology
In the prior art, the oil fume pump exhaust of catering trade operation room or family kitchen generally adopts the top suction type lampblack absorber, and it links to each other with the pipeline of certain-length, is used for the flue gas of collecting is sent into the fume purifier of fume of being located at flue, after purified treatment, to airborne release (generally being high altitude discharge).In top suction type oil smoke suction operation, cooking fume-collecting all carries out in the upper zone above the operating desk and is directly blown or the air inducing discharging by the exhaust blower that is arranged on the airflow pipeline., purifier be collected and be delivered to this top suction type lampblack absorber can not fully with the oil smoke that produces on the kitchen range, and still residual in the therefore indoor or operation room have a lot of oil smoke, and it can't thoroughly be siphoned away and further handle.In addition, as fume purifier of fume, the someone proposes to use spray head, and it removes contained oil smoke to flue gas water spray with absorption, and also the someone proposes to use filter screen or other sorbing material such as adsorptivity liquid, is used for making flue gas therefrom remove contained oil smoke through out-of-date.In addition, also exist windage to catch oil tech in the prior art and static is caught oil tech, still, contain the waste water of oil smoke, the filter screen of waste liquid or obstruction can pollute and a large amount of work.And utilize the operating cost of smoke exhaust ventilator of windage or static higher, and the normal cycle of operation is shorter, and the secondary pollution of air is big.
In order to address this problem, Chinese invention patent application publication number CN1719109A discloses a kind of kitchen oil fume purifying and exhausting machine, it comprises exhaust fume collecting hood, flue, exhaust fan and oil smoke cooling device, the oil smoke cooling device comprises compressor, evaporimeter, condenser and expansion valve, attaching has the evaporimeter of absorption net and cold plate to be arranged in the flue, its direct condensation is assembled the oil smoke in the flue gas and is formed oil droplet, gets rid of oil smoke thus from flue gas.As the oil smoke cooling device, Chinese invention patent Granted publication CN2828606Y discloses cooling water pipe, and its cross over flue also is separated into several regions with flue of living in.Above-mentioned document is all mentioned the purification run that separates oil droplet with the cooling body in the flue from flue gas, but these two pieces of patented technologies all involve with powerful fan from the operating space as kitchen range top top pump drainage flue gas fast, make flue gas flow into gas skirt fast and drain rapidly through flue, can be so, the cooling deoiling effect of the cooling body in the flue is not strong.In addition, in utilizing the CN1719109A of compressor, the high power of compressor and exhaust fan causes power consumption to increase, work noise increases, and in utilizing the CN2828606Y of cooling water pipe, supply system and self refrigeration system of complicated cooling water need be set, this all causes the increase of cost.
The present inventor once disclosed a kind of table air cleaning device in the Chinese invention patent 02131006.8 of oneself, it comprises operating desk and gas skirt, and the air guide channel in dustpan shape gas skirt is connected by the passage on the gas collection tank wall with a plenum chamber.Be provided with exhaust outlet on another tank wall, exhaust blower is arranged in exhaust ports.The inventor finds, a plenum chamber is set and the small-power exhaust blower is set by in smoke eliminator, integrating at exhaust outlet, just can be successfully be inhaled into air guide channel from the flue gas of operating desk through the air inlet of gas skirt, passage on tank wall flows into plenum chamber, after fully stopping in the plenum chamber and mixing, just be discharged in the ambient atmosphere through exhaust outlet.Stopping mix stages, the oil smoke in the flue gas can collide fully and be attached on the tank wall inner surface and presumable, be located on the adsorption piece such as filter screen in the plenum chamber, reach the effect of removing the contained oil smoke of flue gas thus.Although Chinese invention patent 02131006.8 described air cleaning unit can obtain the higher oil smoke effect of removing, along with the progressively reinforcement of people's environmental consciousness, the needs that still have further reinforcement oil fume pump exhaust to purify.
Summary of the invention
For this reason, the purpose of this invention is to provide a kind of novel oil fume pump exhaust purifier, it is particularly useful for occasions such as family kitchen, catering trade operation room or food processing factory, can more effectively solve the oil fume pump exhaust and the purifying problem that exist in the prior art, and need not to pay high additional investment cost and operating cost for this reason, especially reduced power consumption.
The present invention further provides a kind of oil fume pump exhaust and purify unit, it comprises and improving on the oil fume pump exhaust clean-up effect whereby according to oil fume pump exhaust purifier of the present invention, has especially reduced power consumption.
In order to finish above-mentioned purpose, the invention provides a kind of oil fume pump exhaust purifier, be used for pump drainage and purify the flue gas that contains oil smoke, comprising: gas skirt, the air guide channel that has air inlet and be connected with this air inlet; Exhaust outlet is used for the flue gas from this air inlet is discharged oil fume pump exhaust purifier; First plenum chamber, it is arranged in the air guide channel downstream in the flow of flue gas direction from air inlet to exhaust outlet, and a side box wall have be connected with air guide channel and corresponding to first passage of the operative position on the operating desk, the cross section of first passage is less than the cross section of this air guide channel, first plenum chamber has vent on the tank wall except that a diapire and an above-mentioned side box wall, and has the exhaust blower that is arranged on the vent place; Second plenum chamber, it is arranged in the first plenum chamber downstream on above-mentioned flow of flue gas direction, and on a side box wall, has second passage that is connected with vent, exhaust outlet is arranged on the opposite side tank wall of non-diapire of second plenum chamber, be provided with centrifugal blower in exhaust ports, be used for separating oil smoke from the flue gas that is admitted to second plenum chamber by centrifugal action.
In fact, oil fume pump exhaust purifier of the present invention can be divided into cooking fume-collecting evacuation system and fume purifying treatment system.The cooking fume-collecting evacuation system comprises the gas skirt and first plenum chamber, and the fume purifying treatment system mainly comprises second plenum chamber.Certainly, if arrange sorbing materials such as oil removing mechanism and filter screen in the gas skirt and/or first plenum chamber, it also can play certain fume purifying effect.By aforesaid oil fume pump exhaust purifier, air inlet and air guide channel flue gas through gas skirt are pumped into first plenum chamber, in this aspiration procedure, gas skirt sucks air inlet and air guide channel simultaneously with flue gas and pure air on every side, encase owing to flue gas is drawn in by the formed gas wall of pure air this moment, thus with flue gas can outwards not waft the diffusion mode by smooth and easy suction, guaranteed the cleaning in operating desk space of living in, and the flue gas that is inhaled into has comprised the oil smoke of high temperature and the air of low temperature, they fully mix and heat-shift in first plenum chamber, make the oil smoke cooling of high temperature, air pressure after the cooling also will reduce simultaneously, make the bigger negative pressure of generation in first plenum chamber, and then increase the negative pressure at air inlet place, make that flue gas is easier to be inhaled into.Because the first plenum chamber volume is big, flue gas reduces flowing velocity therein suddenly, gas in first plenum chamber is fully mixed and stop the long period, be attached on the tank wall inner face so the part oil smoke in the flue gas is easier, first plenum chamber has played certain clean-up effect.After flue gas fully mixes in first plenum chamber, flue gas is conveyed into second plenum chamber and obtains purified treatment once more there, its mainly purification means are provided in a side of the centrifugal blower of the exhaust ports of second plenum chamber, are used for by centrifugal action oil droplet being separated out from the flue gas sedimentation.In addition, owing to gas energy exchange and the acting of gas volume contraction take place in first plenum chamber and further increase negative pressure, produce the negative pressure that is used for sucking fast the flue gas that is produced so need not high-power exhaust blower to be set from the operative position of operating desk at the vent place of first plenum chamber, thereby reduced power consumption, have remarkable energy saving effect.
In at least one technique scheme of the present invention, first and second plenum chambers are essentially hexahedron such as cuboid, but invention is not limited to this.Those of ordinary skills should be realized that after having read the present invention, plenum chamber of the present invention has been contained and has been sealed out housing certain space or volume, that have Any shape, the opening or hole on being opened in the tank wall part, this housing is to outer closure.
The present invention is particularly useful for having the operating desk of two above operative positions, and here, operating desk includes, but are not limited to, the cooking table of the family expenses kitchen range top, catering trade or food processing industry, lab platform etc.When the present invention is used to have the kitchen range top of two operative positions (kitchen range), first plenum chamber can have one by one corresponding to two first passages of these two operative positions, two vents and two exhaust blowers, and exhaust blower is arranged in the vent place with corresponded manner one by one.In this case, second plenum chamber also can preferably have two second passages, two exhaust outlets and two centrifugal blowers, each second passage and can be communicated with a vent of first plenum chamber respectively, and at each exhaust outlet a centrifugal blower can also be set respectively.
In principle, gas skirt of the present invention can be taked various forms, as long as it can suck and deliver to first plenum chamber of the present invention with the flue gas of operating desk top.But, in at least one technique scheme of the present invention, gas skirt as described below is preferred for obtaining good flue gas collecting effect, gas skirt is by cowl top panel, two cover side plates, cover backboard and cover front apron constitute, the cover front apron is arranged in parallel with respect to the cover backboard that links to each other with this cowl top panel, the two side ends of cover front apron can link to each other with the sealing of cover side plate, air inlet is made of the gap between cover front apron and the cowl top panel, and air guide channel is by cowl top panel, two cover side plates, cover backboard and cover front apron define and preferably extend to always the side box wall or the side that have first passage of first plenum chamber.Under situation about oil fume pump exhaust purifier of the present invention being installed on the operating desk, the air guide channel of gas skirt be positioned at the dorsal part of operating desk and preferably and the table top of operating desk isometric.At this moment, air inlet strip opening isometric preferably with the overhead guard plate of gas skirt.Observe by experiment, when starting oil fume pump exhaust purifier of the present invention, air guide channel is in negative pressure state, can see that the flue gas that produces on the table top operative position forms eddy flow, had no diffusion or drawn in air guide channel with flying away, meanwhile, be positioned at of the difference of the pure air of the inboard of covering front apron outside, both sides cover plate and cowl top panel at aspects such as quality, viscosity and temperature, making flue gas be drawn in by the formed gas wall of pure air on every side encases, flue gas can not flown away at all, smooth and easy air inlet and the air guide channel of entering to external diffusion.
In at least one technique scheme of the present invention, preferably be provided with wind isolation board in second plenum chamber, wind isolation board can be arranged between the exhaust outlet and second passage, and its inner room with second plenum chamber is separated into two chambers, especially is divided into small one and large one two chambers.In the case, the ratio of the volume of the chamber between the volume of the chamber between wind isolation board and the exhaust outlet and second passage and the wind isolation board preferably is about between 3: 1 to 4: 1, and wind isolation board has the through hole that is used to be communicated with above-mentioned two chambers.Here, the above-mentioned exhaust outlet and second passage can respectively have two, and they are the longitudinal centre line symmetric arrangement of relative this device preferably.
In at least one technique scheme of the present invention, can stipulate, be respectively equipped with an inspection hatch on the tank wall of first plenum chamber and/or second plenum chamber, so that user or maintenance personal observe, remove contamination and/or keep in repair plenum chamber inside.
In at least one technique scheme of the present invention, gas skirt can be arranged in the top of first plenum chamber, is used to cover the operating desk that is placed on the first plenum chamber end face.Perhaps, gas skirt can be arranged in the place ahead of first plenum chamber, is used to cover the operating desk of settling away from first plenum chamber.Preceding a kind of arrangement is monoblock type or integrated form, because the operating desk such as the kitchen range top can be integrated in the oil fume pump exhaust purifier, thereby forms the cooking apparatus that can be described as the integrated form kitchen range or the oil fume pump exhaust integral type kitchen range top.A kind of arrangement in back is split type, because gas skirt is independently, is used to cover the kitchen range top away from oil fume pump exhaust purifier, and this arrangement is particularly useful for oil fume pump exhaust purifier of the present invention the existing kitchen range top being transformed.
In at least one technique scheme of the present invention, in second plenum chamber, tilt to be provided with under the situation of filter screen, in the chamber of this filter screen preferred arrangements between wind isolation board and exhaust outlet, promptly be arranged in the big chamber.At this moment, flue gas is introduced into capacitor through exhaust duct, the through hole as arch on wind isolation board enters big chamber, at this moment, gas flow rate significantly reduces, and low speed contacts with the interior filter screen of larger-diameter mist of oil and big chamber, the viscosity of oil is captured big gauging, the centrifugal blower that is set on second plenum chamber through the flue gas behind the filter screen sucks, and larger-diameter mist of oil is separated out by the centrifugal action sedimentation, has further purified flue gas thus before discharging.
Stipulate that at least one technique scheme of the present invention each exhaust blower of first plenum chamber is connected with corresponding second passage by an exhaust duct respectively.Can also stipulate, be provided with leak oil line, be used to make aqueous oil smoke to be back to first plenum chamber at the minimum end face of exhaust duct.In addition, preferably be provided with cooling mechanism at least one segment pipe place of every exhaust duct, be used for being reduced in the temperature of the flue gas of carrying in this segment pipe in the mode that contacts or do not contact flue gas, to this, at least one segment pipe of exhaust duct is preferably the double walled ducting form, and the cooling arrangement of mechanism is at outer tube be used between the interior pipe of supplied flue gases.Here, cooling structure can be made of the circulating line that holds gas or liquid of outside wall surface of pipe in this, circulating line and cycle power device constitute the circulation cooling system, be provided with a plurality of oil baffles that remove in the mutual opposed mode that staggers on the internal face of exhaust duct, the bottom of removing oil baffle links to each other with described cooling mechanism, should be in tilted layout to meet the mode that flows to flue gas except that oil baffle.Perhaps, cooling mechanism directly is made of cooling water, thereby the cold water jacket of above-mentioned outer tube and the conduct of cooling water formation.Mode as an alternative, cooling mechanism is made of the coil-like cold water pipe at least one segment pipe that is placed in exhaust duct, and this cold water pipe is the part of a chilled(cooling) water supply (CWS) circulatory system.
In at least one technique scheme of the present invention, on the internal face of exhaust duct, be provided with a plurality of oil baffles that remove in the mutual opposed mode that staggers.The oil smoke direct collision of sending in the flue gas of exhaust duct removes oil baffle, and part is adhered thereto, and all the other flue gases, prolong the holdup time of oil smoke thus and strengthen adhering to the effect that agglutinates through exhaust duct in tortuous mode.In the case, the bottom of removing oil baffle preferably links to each other with cooling body, and removes oil baffle and be in tilted layout to meet the mode that flows to flue gas.
In at least one technique scheme of the present invention, each exhaust blower of first plenum chamber can be respectively be connected with corresponding second passage by an exhaust duct, and in the chamber between this wind isolation board and this exhaust outlet, second plenum chamber is provided with oil return pipe at minimum end face, one end of this oil return pipe gos deep into second plenum chamber, and the other end gos deep into this exhaust duct.By this oil return pipe, the fluid that is collected in second plenum chamber is back to exhaust duct.Further return first plenum chamber, and be discharged from by the waste oil conduit on first plenum chamber bottom.
In order to finish purpose of the present invention, the present invention also provides a kind of oil fume pump exhaust to purify unit, comprise a plurality of aforesaid oil fume pump exhaust purifiers, wherein the exhaust outlet of each oil fume pump exhaust purifier is connected to same discharge duct and discharges the flue gas that process purifies by the opening of this discharge duct.Aforesaid oil fume pump exhaust with oil fume pump exhaust purifier of the present invention purifies unit and preferably is disposed in large-scale catering industry operation room or the food processing factory.
In addition, the passage of first plenum chamber and/or second plenum chamber and the through hole on the wind isolation board are preferably arched door shape, circle or shape such as square.In addition, purify in the unit at oil fume pump exhaust purifier of the present invention and/or oil fume pump exhaust, should take to be tightly connected in the junction between plenum chamber and pipeline or pipeline and the pipeline, to avoid smoke spillage.These peripheries are the passage of circular arc, when its sectional area and aisle spare form certain proportion, can make air flowing form the eddy current of similar whirlwind before entering passage, thereby avoid contacting of oil smoke and conduit wall.
In principle, exhaust duct of the present invention can have any shape of cross section, but circular cross section or rectangular cross section.And, can on exhaust duct, offer inspection hatch, be convenient to observe, remove contamination and/or keep in repair.Become substantially at first plenum chamber under the situation of cuboid, the cross section of the exhaust duct that links to each other with exhaust blower is cuboid, and described exhaust duct preferably is arranged on the both sides and/or the rear side of first plenum chamber, extends to second plenum chamber of the bodily form that preferably also is rectangle upward.Be equipped with at exhaust duct under the situation of cooling mechanism, the temperature of the flue gas carried of portion is lowered within it, makes the vaporific oil smoke than minor diameter become larger-diameter vaporific oil droplet to a certain extent, make its easier from flue gas sedimentation separate out.
According to the present invention, a plurality of oil fume pump exhaust purifiers preferably with the unit form side by side, overlapping or interlaced arrangement outwards discharges through flue gas after being purified with binding mode in catering trade operation room for example and by same pipeline or a grid.
The invention provides a kind of oil fume pump exhaust purifier, be used for pump drainage and purify the flue gas that contains oil smoke, comprise gas skirt, first plenum chamber that mixes oil smoke and preliminary purification oil smoke of collecting flue gas, the exhaust outlet of discharging flue gas, gas skirt is connected by air guide channel with first plenum chamber, it is characterized in that: described oil fume pump exhaust purifier also comprises second plenum chamber of purifying oil fume, first plenum chamber is connected by exhaust duct with second plenum chamber, and described exhaust outlet is arranged on the casing of second plenum chamber.
In technique scheme, downwards towards first plenum chamber of bottom, described exhaust duct is led to second plenum chamber at top to described air guide channel by first plenum chamber of bottom by gas skirt.
In technique scheme, described gas skirt comprises the air inlet that opens wide that forms with baffle plate downwards, and described air inlet is connected with air guide channel;
Described first plenum chamber, the tank wall place that links to each other with air guide channel has first passage, the cross section of described first passage is less than the cross section of described air guide channel, described first plenum chamber has vent at least one side box wall except that a diapire and an above-mentioned side box wall, described vent place is equipped with exhaust blower;
Described second plenum chamber, at least one side box wall is provided with second passage, and described second passage is connected by the vent of offering on exhaust duct and the first gas collection tank wall, in second plenum chamber centrifugal blower is installed;
Be provided with cooling mechanism in the described exhaust duct.
In technique scheme, the periphery of described first passage is slick and sly arc, and the area of first passage multiply by the ratio of quantity and guide pipeline greater than 1: 5, less than 1: 2.5.
In technique scheme, also comprise operating desk, described operating desk is provided with one or more operative positions; The number of first passage that is provided with on described first plenum chamber is corresponding with the number and the position of described operative position with the position; Second passage that is provided with on described second plenum chamber and described exhaust duct and corresponding with the number and the position of described exhaust outlet.
In technique scheme, be provided with wind isolation board in described second plenum chamber, this wind isolation board is arranged between described exhaust outlet and described second passage and the inner room of described second plenum chamber is separated into big chamber and capacitor, the ratio of the volume of the capacitor between the volume of the big chamber between wind isolation board and the exhaust outlet and second passage and the wind isolation board was greater than 3: 1, less than 4: 1, have the through hole that is used to be communicated with big chamber and capacitor on the wind isolation board.
In technique scheme, tilt to be provided with filter screen in described first plenum chamber, and/or tilt to be provided with filter screen in described second plenum chamber, described filter screen is arranged in the chamber between this wind isolation board and this exhaust outlet; The diapire of described first plenum chamber is provided with waste oil conduit and under-chassis, on the tank wall of the tank wall of described first plenum chamber and described second plenum chamber, is respectively equipped with an inspection hatch.
In technique scheme, described operating desk is installed on the end face of described first plenum chamber, and described gas skirt is arranged in the top of described first plenum chamber, is used to cover described operating desk; Described second plenum chamber is arranged on the top of described gas skirt;
Perhaps, the setting that above described operating desk, keeps at a certain distance away of described gas skirt, and cover described operating desk; Described second plenum chamber is arranged on described first plenum chamber top, and described two plenum chambers and gas skirt, operating desk are split type, only are communicated with by exhaust duct.
In technique scheme, cooling mechanism in the described exhaust duct is for holding the circulating line of cryogenic liquid or gas, circulating line and cycle power device constitute the circulation cooling system, be provided with a plurality of oil baffles that remove in the mutual opposed mode that staggers on the internal face of exhaust duct, the bottom of removing oil baffle links to each other with described cooling mechanism, should be in tilted layout to meet the mode that flows to flue gas except that oil baffle.
In technique scheme, in the chamber between described wind isolation board and described exhaust outlet, be provided with oil return pipe at the minimum end face of described second plenum chamber, an end of this oil return pipe stretches into described second plenum chamber, and the other end stretches into described exhaust duct; Minimum end face at described exhaust duct is provided with leak oil line.
The present invention also provides a kind of oil fume pump exhaust to purify unit, comprise one of a plurality of as above-mentioned technical scheme described oil fume pump exhaust purifier, wherein the exhaust outlet of each oil fume pump exhaust purifier is connected to same discharge duct and discharges flue gas through purifying by the opening of this discharge duct.
The present invention has obtained following technique effect:
1. a plurality of plenum chambers are set in oil fume pump exhaust purifier, wherein are provided with the exhaust duct that has cooling device between first plenum chamber and second plenum chamber, make flue gas to be further cooled, be more prone to be filtered and centrifugation.
2. first plenum chamber is arranged under the operating desk, second plenum chamber is arranged on the gas skirt that covers operating desk, make when adopting the larger capacity plenum chamber, the overall structure of device is compact more, and flue gas is discharged through rising after descending again, the running length that extended makes that flue gas is easier to be cooled, and then is more prone to be filtered and centrifugation.
Description of drawings
Fig. 1 is the front view of expression according to the structure of an embodiment of oil fume pump exhaust purifier of the present invention;
Fig. 2 is the sectional view of expression the foregoing description structure;
Fig. 3 is the schematic perspective view of expression the foregoing description;
Fig. 4 is the schematic side view of expression according to the structure of another embodiment of oil fume pump exhaust purifier of the present invention.
Mark among the figure: gas skirt 1; First plenum chamber 2; Second plenum chamber 3; Operating desk 4; Operative position 4a; Operative position 4b; Control panel 5; Exhaust duct 6; Cooling mechanism 8; Fan outlet tube 9; Exhaust outlet 10; Air inlet 11; Air guide channel 12; Cowl top panel 13; Cover side plate 14; Cover backboard 15; Cover front apron 16; First passage 21; Vent 22; Exhaust blower 23; Filter screen 24; Waste oil conduit 25; Under-chassis 26; Inspection hatch 27; Leak oil line 29; Discharge duct 30; Second passage 31; Centrifugal blower 32; Wind isolation board 33; Big chamber 34; Capacitor 35; Through hole 36; Inspection hatch 37; Filter screen 38; Oil return pipe 39.
The specific embodiment
Understand and enforcement the present invention for the ease of those of ordinary skills, the present invention is described in further detail below in conjunction with the drawings and the specific embodiments.
In an embodiment of oil fume pump exhaust purifier of the present invention, be used for pump drainage and mainly comprise gas skirt, first plenum chamber and second plenum chamber with the oil fume pump exhaust purifier that purifies the flue gas that contains oil smoke, wherein gas skirt comprises air inlet and the air guide channel that is connected with air inlet.This oil fume pump exhaust purifier also comprises and is used for and will discharges the exhaust outlet of oil fume pump exhaust purifier from the flue gas of air inlet, on the flow of flue gas direction from first air inlet to exhaust outlet, first plenum chamber is arranged in the downstream of the air guide channel of gas skirt, first plenum chamber has at a side box wall and is connected with air guide channel and corresponding to first passage of the operative position on the operating desk, the cross section of first passage is less than the air guide channel cross section.First plenum chamber has vent on the tank wall except that a diapire and an above-mentioned side box wall, be arranged on the exhaust blower at vent place in addition.Second plenum chamber is arranged in the first plenum chamber downstream on the flow of flue gas direction, and has second passage that is connected with the vent of first plenum chamber at a side box wall, this exhaust outlet is arranged on the opposite side tank wall of non-diapire of second plenum chamber, be provided with centrifugal blower in exhaust ports, be used for separating oil smoke from the flue gas that is admitted to second plenum chamber by centrifugal action.
By having the oil fume pump exhaust purifier of above-mentioned The Nomenclature Composition and Structure of Complexes, air inlet and air guide channel through gas skirt, flue gas is pumped into first plenum chamber, in this aspiration procedure, gas skirt sucks flue gas and pure air on every side thereof simultaneously, because flue gas and pure air are had any different at aspects such as quality, viscosity and temperature, so flue gas is drawn in by the formed gas wall of pure air on every side and encases, the mode that spreads can outwards not waft has been guaranteed the abundant cleaning in operating desk space of living in by smooth and easy suction thus.The flue gas that is inhaled into comprises high-temperature oil smoke and Cryogenic air, they fully mix and positive energy exchange in first plenum chamber, and the contraction of gas acting takes place, and further increase the negative pressure in first plenum chamber, and then increase the negative pressure at air inlet place, make that flue gas is easier to be inhaled into.Because flue gas fully mixes in first plenum chamber and stops the long period, so the part oil smoke in the flue gas is attached on the tank wall inner surface, first plenum chamber plays certain catharsis.After flue gas fully mixes in first plenum chamber, flue gas is conveyed into second plenum chamber and is purified processing there, main purification means are provided in a side of the centrifugal blower of the exhaust ports of second plenum chamber, be used for by centrifugal action make oil droplet from flue gas once more sedimentation separate out.In addition, owing to gas energy exchange and the acting of gas volume contraction take place in first plenum chamber and further increase negative pressure, produce the negative pressure that is used for sucking fast the flue gas that is produced so need not high-power exhaust blower to be set from the operative position of operating desk 4 at the vent place of first plenum chamber, thereby reduced power consumption and noise of motor, have remarkable energy saving effect.
Fig. 1 to Fig. 3 represents a specific embodiment according to oil fume pump exhaust purifier of the present invention.Here, oil fume pump exhaust purifier comprises gas skirt 1, first plenum chamber 2 and second plenum chamber 3, and gas skirt 1 comprises air inlet 11 and the air guide channel 12 that is connected with this air inlet.Oil fume pump exhaust purifier also comprises and is used for and will discharges the exhaust outlet 10 of fume purifier of fume from the flue gas of air inlet 11.On flow of flue gas direction from first air inlet 11 to exhaust outlet 10, first plenum chamber 2 is arranged in the downstream of the air guide channel 12 of gas skirt 1, and on a side box wall, have and be connected with air guide channel 12 and corresponding to the cross section of first passage, 21, the first passages of the operative position 4a of an operating desk 4 and 4b cross section less than air guide channel 12.The periphery of first passage is slick and sly arc, and the cross-sectional area of each first passage multiply by the quantity of first passage, and the total cross-sectional area of promptly a plurality of first passages and the ratio of guide pipeline are greater than 1: 5, less than 1: 2.5.First plenum chamber 2 has vent 22 on the tank wall except that a diapire and an above-mentioned side box wall, also have the exhaust blower 23 that is arranged on vent 22 places.Second plenum chamber 3 is arranged in the downstream of first plenum chamber 2 on above-mentioned flow of flue gas direction, second passage 31 that is connected with the vent 22 of first plenum chamber 2 is arranged on the one side box wall, here, exhaust outlet 10 is arranged on the opposite side tank wall of non-diapire of second plenum chamber 3,10 places are provided with centrifugal blower 32 at exhaust outlet, are used for separating oil smoke by centrifugal action from the flue gas that is admitted to second plenum chamber 3.
Extremely shown in Figure 2 as Fig. 1, in this embodiment, the gas skirt 1 of this oil fume pump exhaust purifier is placed in the top of the operating desk 4 that has control panel 5, operating desk 4 is integrated or is installed on the end face of first plenum chamber of oil fume pump exhaust purifier in other words, constitutes the so-called integral type oil fume pump exhaust kitchen range top.Although without limits to the quantity of first passage 21, vent 22 and exhaust blower 23 on first plenum chamber, but be provided with two first passages 21, two vents 22 and two exhaust blowers 23 in this embodiment, and as shown in Figure 1, they arrange that with the longitudinal centre line mode of left and right symmetry of relative oil fume pump exhaust purifier this is optional certainly.
In principle, gas skirt can adopt various gas skirt of the prior art or exhaust fume collecting hood, but gas skirt 1 structure especially as depicted in figs. 1 and 2 is preferred.Here, gas skirt 1 is by cowl top panel 13, two cover side plates 14, cover backboard 15 and cover front apron 16 constitute, cover front apron 16 is arranged in parallel with respect to the cover backboard 15 that links to each other with cowl top panel 13, and the two side ends of cover front apron 16 links to each other with 14 sealings of cover side plate, the air inlet 11 of gas skirt is made of the gap between cover front apron 16 and this cowl top panel 13 and is preferably elongated, the air guide channel 12 of gas skirt is by cowl top panel 13, two cover side plates 14, cover backboard 15 and cover front apron 16 define, it extends to first plenum chamber 2 always, side box wall with first passage 21, and be communicated with first plenum chamber 2 by first passage 21.As shown in Figure 2, in first plenum chamber 2, be provided with flue gas and intercept filter element such as filter screen 24, be used at the first plenum chamber inner filtration and abundant mixed flue gas, but this is optional.In addition, first plenum chamber 2 is used for will discharging the waste oil conduit 25 of collected waste oil in first plenum chamber and being used to support above-mentioned oil fume pump exhaust purifier in ground under-chassis 26 being provided with on the diapire.
As shown in Figure 2, be provided with wind isolation board 33 in second plenum chamber 3, this wind isolation board is arranged between the exhaust outlet 10 and second passage 31 of second plenum chamber 3, its inner room with second plenum chamber is separated into two chambers 34 and 35, can be small one and large one, ratio at the volume of the volume of the chamber 34 between wind isolation board 33 and the exhaust outlet 10 and the chamber 35 between second passage 31 and wind isolation board 33 is about 3: 1 to 4: 1, but this is optional.In addition, wind isolation board 33 has the through hole 36 that is used to be communicated with two chambers 34 and 35.The shape of described through hole is arch door shape as shown in the figure, but its also can be rounded, square etc. shape.In addition, the shape of second passage is rectangle as shown in the figure, but this is optional, and those skilled in the art can expect apparently that other shape is as circle, arched door shape etc.As shown in the figure, second passage 31, exhaust outlet 10 and centrifugal blower 32 on second plenum chamber respectively have two, they are also arranged with above-mentioned relatively longitudinal centre line symmetrical manner, thereby, each second passage 31 is connected with a vent 22 of first plenum chamber 2 respectively, and is respectively equipped with a centrifugal blower 32 at each exhaust outlet 10.In principle, second passage of second plenum chamber and the quantity of centrifugal blower and arrangement are corresponding to first passage of first plenum chamber and the quantity and the arrangement of vent, but this is optional, and those skilled in the art can expect multiple feasible change to this.In addition, as shown in Figure 2, or second plenum chamber 3 in also tilt to be provided with filter screen 38, be used for the oil smoke that flue gas is fallen in further adsorption filtration.At this moment, filter screen 38 is disposed in the chamber 34 between wind isolation board 33 and the exhaust outlet 10.As shown in figures 1 and 3, on the tank wall of the tank wall of first plenum chamber 2 and second plenum chamber 3, be respectively equipped with an inspection hatch 27 and 37, conveniently check, remove and/or keep in repair.Especially as shown in Figure 1, each exhaust blower 23 of first plenum chamber 2 is connected with corresponding second passage 31 by an exhaust duct 6 respectively.Here, exhaust duct 6 can be communicated to the exhaust blower 23 of first plenum chamber 2 always, and promptly it also constitutes the fan outlet tube of exhaust blower, and perhaps as shown in the figure, exhaust duct 6 is tightly connected with fan outlet tube 9 independently.Shown in the dotted line among Fig. 1, be provided with leak oil line 29 at minimum end face at exhaust duct 6, be used to make aqueous oil droplet to be back to first plenum chamber 2.In the chamber 34 between wind isolation board 33 and exhaust outlet, second plenum chamber 3 is provided with oil return pipe 39 at minimum end face, and an end of oil return pipe 39 stretches into second plenum chamber 2, and the other end stretches into exhaust duct 6, as shown in Figure 3, and its outer being exposed on the duct wall of exhaust duct 6.
Can independently be installed in household kitchen as above-mentioned oil fume pump exhaust device, the operation room of catering trade or food processing industry, in the laboratory etc., perhaps embodiment as shown in figures 1 and 3 is such, carry out fume emission by same discharge duct 30, at this moment, a plurality of multi-form, but preferably the same with the foregoing description oil fume pump exhaust purifier or the exhaust outlet of smoke exhaust ventilator also are connected with this root discharge duct 30, thus one, can be in the kitchen, in operation room or the laboratory side by side, staggered, even arrange above-mentioned a plurality of oil fume pump exhaust purifier or smoke exhaust ventilator overlappingly.
As shown in Figure 4 according to another embodiment of oil fume pump exhaust device of the present invention, the difference of itself and the foregoing description mainly is, gas skirt 1 is not to integrate or be installed in the oil fume pump exhaust device, but outside in other words, the place ahead that is arranged in first plenum chamber 3, be used to cover the operating desk of settling away from first plenum chamber 24, this arrangement can be called as split type, and it is particularly useful for existing kitchen utilities is transformed.This shows that oil smoke arranging device of the present invention should not be understood that to comprise operating desk itself.Except above-mentioned difference, the composition of embodiment shown in Figure 4 and structure and Fig. 1 are to composition embodiment illustrated in fig. 3 and construct basic identically, thereby in Fig. 4, the Reference numeral identical with Fig. 1 to Fig. 3 is used to indicate identical member.In Fig. 4, also show flue gas and begin flow regime to discharge duct from air inlet with arrow, wherein the arrow above first plenum chamber 2 represents that flue gas enters second plenum chamber 3 by the exhaust duct 6 on side side and through second passage 31, and has second plenum chamber to flow out discharge duct 30.
In in above-mentioned a plurality of embodiment any one, can be provided with cooling mechanism 8, be used for being reduced in the temperature of the flue gas of carrying in this segment pipe in the mode that contacts or do not contact flue gas at least one segment pipe place of every exhaust duct 6.Can expect this, Fig. 2 or shown in Figure 4 for example, cooling mechanism 8 can be made of the coil-like cold water pipe at least one segment pipe that is installed in exhaust duct, this cold water pipe is the part of a chilled(cooling) water supply (CWS) circulatory system, thus one, mode with the contact flue gas is directly cooled off the flue gas of carrying in exhaust duct, make vaporific oil smoke become larger-diameter vaporific oil droplet to a certain extent than minor diameter, make its more here easy or in the back in second plenum chamber from flue gas sedimentation separate out.It will also be appreciated that following cooling mechanism structure, promptly, at least one segment pipe of exhaust duct is the double walled ducting form, the cooling arrangement of mechanism is at outer tube and be used for constituting between the interior pipe of supplied flue gases and by the cold water pipe around the outer wall of inner tube face, and cold water pipe is the part of a chilled(cooling) water supply (CWS) circulatory system.The mode of this indirect cooled flue gas has the following advantages, and does not promptly worry the maintenance work of removing contamination that cooling element is contaminated by smoke and brings thus.
As replacement means in exhaust duct, removing oil smoke, can be on the internal face of exhaust duct mutually opposed but mode that stagger arrange a plurality of oil baffles that remove, like this, the oil smoke direct collision of sending in the flue gas of exhaust duct removes oil baffle, part is adhered thereto, remaining flue gas through exhaust duct, has prolonged the oil smoke holdup time in tortuous mode thus, has strengthened adhering to the effect that agglutinates.In the case, the bottom of removing oil baffle preferably links to each other with cooling body, removes oil baffle and is in tilted layout in the mode of meeting to flue gas stream, strengthens the effect of condensation oil removing thus and prevents that oil droplet is accumulated in except that on the oil baffle.
Below, illustrate the working condition of oil fume pump exhaust purifier as shown in Figure 1 to Figure 3.
Oil fume pump exhaust purifier as shown in the figure for example is installed on two kitchen range eye kitchens range top in hotel, and here, it can be called as integrated form catering trade smoke pumping and purify kitchen range.First plenum chamber 2 below the kitchen range top has about 1 cubic metre of volume, and is corresponding with spacing and two kitchen range eyes on the kitchen range top of two arch passages offering on the tank wall that air guide channel 12 is connected at it.When starting this oil fume pump exhaust purifier, the oil smoke that cooking apparatus produced on kitchen range eye by around pure air tightly encase, to corresponding first passage of this kitchen range eye 21 rotational flows, and the diffusion of can not wafting.Oil smoke with suitable high-temperature and energy passes first passage, flows into first plenum chamber 2.At this moment, under the effect of grid principle, in first plenum chamber 2, flue gas and the clean normal temperature air that is together sucked fully mix and positive energy exchange, realize that gas volume shrinks acting, first plenum chamber, the 2 interior negative pressure value of forcing down than atmosphere increase relatively, and this negative pressure value reaches the air inlet 11 of gas skirt 1 again through air guide channel 12 by first passage 21 of first plenum chamber 2.The generation of this negative pressure value makes the oil smoke of kitchen range eye top ascension be sucked air inlet 11 and air guide channel 12 more quickly.
What deserves to be explained is,, make flue gas contained energy be used effectively again, make it to become the power of gas molecule motion with uniform temperature and energy because be provided with the plenum chamber of certain volume.Therefore, can realize the effect of the efficient pump drainage of oil smoke with lower power of motor.Here, the motor rated power of two exhaust blowers on first plenum chamber only needs about 100 watts/platform, and concerning smoke exhaust ventilator of the prior art, if reach identical efficient pump drainage effect, then need the rated power more than 600 watts mostly, that have even up to 1.5 kilowatts, this shows that the setting of plenum chamber has remarkable energy saving effect.In addition, be admitted to second plenum chamber 3 from the flue gas of first plenum chamber 2, and be purified processing there, its mainly purification means are provided in a side of the centrifugal blower 32 of the exhaust ports of second plenum chamber, are used for by centrifugal action oil droplet being separated out from the flue gas sedimentation.In addition, if cooling mechanism is set in being used for flue gas is sent into from first plenum chamber exhaust duct 6 of second plenum chamber or removes supplementary means such as oil baffle, for example the internal face to exhaust duct 6 carries out the mirror-polishing processing or smears specific coatings material such as teflon, can further strengthen the fume purifying effect.
Although below in conjunction with the embodiments the present invention is described, but the present invention should not be limited to given specific embodiment or feature compound mode, each technical characterictic of the present invention can be made up with the compound mode that is different from upper type, and those of ordinary skills can expect various improvement and change under the premise without departing from the spirit and scope of the present invention.

Claims (8)

1. oil fume pump exhaust purifier, be used for pump drainage and purify the flue gas that contains oil smoke, comprise gas skirt (1), first plenum chamber (2) that mixes purifying oil fume of collecting flue gas, the exhaust outlet (10) of discharging flue gas, gas skirt is connected by air guide channel (12) with first plenum chamber, it is characterized in that: described oil fume pump exhaust purifier also comprises second plenum chamber (3) of purifying oil fume, first plenum chamber (2) is connected by exhaust duct (6) with second plenum chamber (3), and described exhaust outlet is arranged on the casing of second plenum chamber;
Described gas skirt (1) comprises the air inlet (11) that opens wide that forms with baffle plate downwards, and described air inlet (11) is connected with air guide channel (12);
Described first plenum chamber (2), the tank wall place that links to each other with air guide channel (12) has first passage (21), the cross section of described first passage is less than the cross section of described air guide channel, described first plenum chamber has vent (22) at least one side box wall except that a diapire and an above-mentioned side box wall, described vent place is equipped with exhaust blower (23);
Described second plenum chamber (3), at least one side box wall is provided with second passage (31), described second passage (31) is connected by the vent of offering on exhaust duct (6) and the first gas collection tank wall (22), in second plenum chamber centrifugal blower is installed;
Be provided with cooling mechanism (8) in the described exhaust duct (6).
2. oil fume pump exhaust purifier as claimed in claim 1 is characterized in that: downwards towards first plenum chamber of bottom, described exhaust duct (6) is led to second plenum chamber at top to described air guide channel (12) by first plenum chamber of bottom by gas skirt.
3. oil fume pump exhaust purifier according to claim 2 is characterized in that: the periphery of described first passage (21) is slick and sly arc, and the total cross-sectional area of first passage (21) and the ratio of guide pipeline are greater than 1: 5, less than 1: 2.5.
4. according to claim 1,2 or 3 described oil fume pump exhaust purifiers, it is characterized in that: also comprise operating desk (4), described operating desk is provided with one or more operative positions; The number of first passage (21) that described first plenum chamber (2) upward is provided with is corresponding with the number and the position of described operative position with the position; Described second plenum chamber (3) is gone up second passage (31) and described exhaust duct (6) and corresponding with the number and the position of described exhaust outlet (10) that is provided with.
5. according to claim 1,2 or 3 described oil fume pump exhaust purifiers, it is characterized in that, be provided with wind isolation board (33) in described second plenum chamber (3), this wind isolation board (33) is arranged between described exhaust outlet (10) and described second passage (31) and the inner room of described second plenum chamber (3) is separated into big chamber (34) and capacitor (35), the ratio of the volume of the capacitor (35) between the volume of the big chamber (34) between wind isolation board (33) and the exhaust outlet (10) and second passage (31) and the wind isolation board (33) was greater than 3: 1, less than 4: 1, have the through hole (36) that is used to be communicated with big chamber and capacitor on the wind isolation board (33).
6. according to claim 1,2 or 3 described oil fume pump exhaust purifiers, it is characterized in that, tilt to be provided with filter screen (24) in described first plenum chamber (2), and/or tilting to be provided with filter screen (38) in described second plenum chamber (3), the filter screen (38) in described second plenum chamber (3) is arranged in the big chamber (34) between this wind isolation board (33) and this exhaust outlet (10); The diapire of described first plenum chamber (2) is provided with waste oil conduit (25) and under-chassis (26), on the tank wall of the tank wall of described first plenum chamber (2) and described second plenum chamber (3), is respectively equipped with an inspection hatch (27,37).
7. oil fume pump exhaust purifier according to claim 2, it is characterized in that: the cooling mechanism (8) in the described exhaust duct (6) is for holding the circulating line of cryogenic liquid or gas, circulating line and cycle power device constitute the circulation cooling system, be provided with a plurality of oil baffles that remove in the mutual opposed mode that staggers on the internal face of exhaust duct, the bottom of removing oil baffle links to each other with described cooling mechanism (8), should remove oil baffle and be in tilted layout in the mode of meeting to flue gas stream.
8. oil fume pump exhaust purifier according to claim 5, it is characterized in that, in the big chamber (34) between described wind isolation board (33) and described exhaust outlet (10), minimum end face at described second plenum chamber (3) is provided with oil return pipe (39), one end of this oil return pipe stretches into described second plenum chamber (3), and the other end stretches into described exhaust duct (6); Minimum end face at described exhaust duct (6) is provided with leak oil line (29).
CN2010101025722A 2010-01-29 2010-01-29 Oil fume pump exhaust purifier Active CN101793418B (en)

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